Thechevyman122

iTrader: (3)

absolutely amazing man...i vote sticky material. So i have 4 more easy questions

1.) what does a custom gring cam cost?

2.) Z06 springs and pushrods will be sufficient?

3.) What kind of gains can i expect running the stock tc? with a aftermarket one?

4.) will this cam be "lopey" or still idle smooth?

ricoc

info on lift should be editted as the stock lift of .457" is in fact the distance the valve moves. Actual lobe height will be .457 divided by 1.7

InchUp

iTrader: (2)

You are correct, it was late and my brain was fried.

InchUp

iTrader: (2)

1.) Call CompCAMS. If you get some BS answer like use an off-the-shelf cam let me know and I'll call up my friend who grinds NASCAR cams for CompCAMS and made that custom grind for me about a year ago.

2.) Springs will be 100% dependent on which cam you choose to go with. Figure out your camshaft, then purchase springs to match. Have CompCAMS help ya or just figure on buying springs to accommodate about 5-10% more lift than what your cam maxes out on. (My custom grind cam has a lift of .567" so I used "orange" ZO6 springs which are good for about .580" lift leaving a little headroom.)

3.) Higher stall converters are solely for 1/4 mile vehicles and street machines. You'd be trading harder launches off the line for extra heat in the transmission from the excess slippage, worse gas mileage, poor daily driver manners and less stump pulling low end throttle response while towing. Not to mention aftermarket converters are not exactly cheap. I'd invest in a good valvetrain before a converter anything...if you're dead set on taking the transmission apart or touching the tranny at all, add a larger tranny cooler in place of your current one in the grille. I would not expect any horsepower gains by any means by moving up to a higher stall converter, that's not the purpose. The sole purpose is to let you hold the brakes firm on the line and rev the motor higher so that when you release the brakes your motor is already closer to it's peak horsepower. Here's a test...go find a stop sign. Step hard on the brakes while in Drive. While holding the brake firm with your left foot use your right foot to step on the gas. Bring the RPM's up as high as your brakes will hold the truck steady without moving. Theoretically your truck should start lurching forward around 2200 rpms or so. A "high stall" converter will move that point from about 2200 to whatever stall you'd get. My suggestion would be to leave the tranny alone and just have the truck tuned well after the cam and springs swap so that you can take full advantage of the new valvetrain.

4.) Waaaaaaaaaaaa (ect ect) aaaaay too many people think they know a powerful camshaft by the exhaust note. Generally a cam that makes an exhaust tone extremely lopey means that the cam is not suited for anything but superior top end power, nothing below 4000 or so would be my guess. The motor with those types of camshafts is struggling to stay alive at idle because of the severe lack in vacuum. Though this cam will sound more lopey than stock, it will by no means sound like video 1. Your cam will sound similar to video 2.

Video 1.
http://youtube.com/watch?v=L6z2tn1CymY

Video 2.
http://youtube.com/watch?v=-pdWqchaSC4&feature=related

hirdlej

iTrader: (31)

Where's the guy that always has to post "I want a cam that lopes hard manNnn" "I don't care about anything but the lope" Slightly off topic but Pat, did you end up getting a 218/224 cam and not the 212/218??

hirdlej

iTrader: (31)

Oh and by the way, this is a badass truck and I love the way this one idles. Does anyone know who it belongs to and if there's anymore vids floating around on the interweb? This is a 216/224 cam in a 6.0. This has a nice healthy idle that won't vibrate your interior/dash/rear view mirror to death. http://videos.streetfire.net/video/S...-SS_124150.htm

InchUp

iTrader: (2)

I rest my case. That cam sounds just like my buddy's 6.0L Sierra and it's music to my ears.

Joe, I still have the XR259 for my 5.7L which is 206/212, .515/.522, 112 LSA. My first choice was the ZR265, but I'm sticking with the 259.